MSKEFYARLAEIQEHLNAPKNQYNSFGKYKYRSCEDILEGVKPLLKGLFLSISDEIVLIGDRYYVKATATITDGENSHSASAIAREEENKKGMDAAQVTGATSSYARKYCLNGLFGIDDAKDADTEEHKQQQNAAPAKQTKSSPSSPAPEQVLKAFSEYAATETDKKKLIERYQHDWQLLTGHDDEQTKCVQVMNIRINELKQVA Essential recombination function protein erf ERF_BPP22 205 Promotes homologous recombination. Essential for P22 growth in a recA, but not a wild-type, host.